524 



LIST OF DIPTERA. 



Group 5. 



Corpus angustum, lineare, fere nudum. Facies apud epi- 

 stoma convexa. Mystax sat dense setosus. Proboscis recta, 

 valida, linearis. Pedes validi, breviustuli, parce setosi et pilosi. 

 Ala? breves. 



Body narrow, linear, nearly bare. Face convex towards the 

 epistoma. Mystax with rather numerous bristles. Proboscis 

 straight, stout, linear. Legs stout, rather short, with a few short 

 hairs and bristles. Wings short. Fore fork of the cubital vein 

 slightly undulating; hind fork nearly straight, slightly inclined to- 

 wards the first externo-medial, but remote from it on the border ; 

 first and second externo-medial veins straight ; third forming an 

 obtuse angle with the prsebrachial and joining the fourth far from 

 the border. Subanal joining the anal very near the border. 



Laphria Sadales. 



43. Laphria melanopogox. 



Foem. Nigra ; occiput, thorax et pedes cinereo hirta ; facies et 

 abdomen nigro hirta ; aim subfuscescentes. 



Laphria melanopogon, Wied. Auss. Zweifl. i. 520, 36. 



Kentucky. 



44. Laphria dersata. 



Scoriaceo-nigra ; caput et pedes cinereo hirta ; alarum vena fusco 

 limbatm. 



Laphria dersata, Say, American Entomology, 1, p], 6. Wied. Auss. 

 Zweifl. i. 506, 12. 



Pennsylvania. 



45. Laphria thoracica. 



Hirsuta, atra ; thorax sulphureus ; aim fuscanm. 



Laphria thoracica, Fahr. Syst. And. 158, 10. Wied. Dipt. Exot. 

 i. 236, 8; Auss. Zweifl. i. 511, 2i. Macq. Dipt. Exot. i. 2, 

 68, 14. 



United States. West Indies. 



46. Laphria flavicollis. 

 Mas. Niaia; thorax aurario pilosus ; aim cinerem. 



